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stammer.ai website review

Visit site (opens in a new tab)Reviewed 10 November 202633 issues · 80 checks

This review found 33 issues worth fixing on stammer.ai, 10 of them high impact, across 80 checks. The most urgent: fails Core Web Vitals for real visitors. Your full playbook turns these into prioritised fixes alongside reviews, competitors and channels.

  1. Homepage
  2. Phone render
  3. Links and pages
  4. Google PageSpeed

Google PageSpeed Insights (opens in a new tab), mobile

Real-visitor load time (LCP)75th percentile, phones
2.2 s849 msMay 23Nov 71.0 s
Show as table
DateReal-visitor load time (LCP)
May 23, 20262.0 s
May 30, 20262.0 s
Jun 6, 20262.0 s
Jun 13, 20262.0 s
Jun 20, 20261.7 s
Jun 27, 20261.4 s
Jul 4, 20261.1 s
Jul 11, 20261.1 s
Jul 18, 20261.0 s
Jul 25, 20261.0 s
Aug 1, 20261.0 s
Aug 8, 20261.0 s
Aug 15, 20261.0 s
Aug 22, 20261.0 s
Aug 29, 20261.1 s
Sep 5, 20261.1 s
Sep 12, 20261.2 s
Sep 19, 20261.2 s
Sep 26, 20261.2 s
Oct 3, 20261.1 s
Oct 10, 20261.2 s
Oct 17, 20261.2 s
Oct 24, 20261.0 s
Oct 31, 20261.1 s
Nov 7, 20261.0 s
Real-visitor tap response (INP)75th percentile, phones
210 ms81 msMay 23Nov 7130 ms
Show as table
DateReal-visitor tap response (INP)
May 23, 2026195 ms
May 30, 2026187 ms
Jun 6, 2026135 ms
Jun 13, 2026120 ms
Jun 20, 2026118 ms
Jun 27, 2026129 ms
Jul 4, 2026129 ms
Jul 11, 2026129 ms
Jul 18, 2026118 ms
Jul 25, 2026104 ms
Aug 1, 202696 ms
Aug 8, 202697 ms
Aug 15, 2026110 ms
Aug 22, 2026114 ms
Aug 29, 2026121 ms
Sep 5, 2026125 ms
Sep 12, 2026121 ms
Sep 19, 2026127 ms
Sep 26, 2026133 ms
Oct 3, 2026121 ms
Oct 10, 2026138 ms
Oct 17, 2026128 ms
Oct 24, 2026130 ms
Oct 31, 2026136 ms
Nov 7, 2026130 ms

Chrome UX Report (opens in a new tab): real Chrome visitors over rolling 28-day periods.

One score from every part of this review. How it works

Full-page screenshot of stammer.ai (phone) rendered by Google PageSpeed Insights

How it loaded on a phone

  1. stammer.ai at 0.4 s0.4 s
  2. stammer.ai at 0.8 s0.8 s
  3. stammer.ai at 1.1 s1.1 s
  4. stammer.ai at 1.5 s1.5 s
  5. stammer.ai at 1.9 s1.9 s
  6. stammer.ai at 2.3 s2.3 s
  7. stammer.ai at 2.6 s2.6 s
  8. stammer.ai at 3.0 s3.0 s

Speed

5 to fix78
  • 3,282 HTML elements

    The page has 3,282 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

  • Mobile performance score: 78

    78/100

    Your mobile performance score is 78. Pages that score under 90 lose visitors before the first paint.

  • 5 third-party services on the page

    5 third-party services load with your homepage (Facebook, leadconnectorhq.com and Cloudflare and others), adding 1.7 MB and 235 ms of main-thread time.

  • leadconnectorhq.com adds 83 ms

    83 ms

    leadconnectorhq.com costs a phone 83 ms of main-thread work and 1.4 MB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

  • Main-thread work: 2.0 s

    A phone's processor spends 2.0 s on main-thread work while loading, 991 ms of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

  • 8 long tasks on the main thread

    8 long tasks block the main thread while loading, the longest for 244 ms. During a long task the page ignores taps.

  • Reduce unused JavaScript

    237 KiB

    About 237 KiB of JavaScript is downloaded but never used on this page.

  • Use efficient cache lifetimes

    211 KiB

    6 files are served with short cache lifetimes, so returning visitors download them again (211 KiB).

  • Improve image delivery

    36 KiB

    2 images could be 36 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

  • Reduce unused CSS

    25 KiB

    About 25 KiB of CSS is downloaded but never applied on this page.

  • Legacy JavaScript

    23 KiB

    Polyfills for old browsers add 23 KiB JavaScript that modern phones do not need.

  • Chained critical requests

    Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

  • Forced reflow

    Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

  • Minify JavaScript

    3 KiB

    3 KiB could be saved by minifying JavaScript.

1 checks passed
  • Server response: 17 ms

    17 ms

    Your server sent the HTML in 17 ms, well inside Google's 600 ms guideline.

Core Web Vitals

8 to fix50
  • Fails Core Web Vitals for real visitors

    Real Chrome users on phones do not pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)). Google uses this in ranking.

  • Time to Interactive: 10.5 s

    10.5 s

    The page becomes fully interactive after 10.5 s. Good is under 3.8 s.

  • Real-user CLS: 0.12

    0.12

    For real visitors the layout shifts by 0.12 (75th percentile). Good is under 0.1.

  • 58 images without width and height

    58 images have no width and height attributes, so the layout jumps as each one loads.

  • Largest Contentful Paint: 3.6 s

    3.6 s

    Your largest element takes 3.6 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Build and Deploy AI Agents”.

  • Cumulative Layout Shift: 0.151

    0.151

    The layout shifts by 0.151 while loading, so content jumps under the reader's thumb. Good is under 0.1.

  • Total Blocking Time: 242 ms

    242 ms

    Scripts block taps and scrolling for 242 ms in total while the page loads. Good is under 200 ms.

  • First Contentful Paint: 1.8 s

    1.8 s

    The first text or image appears after 1.8 s on a phone. Good is under 1.8 s.

6 checks passed
  • Real-user LCP: 1.2 s

    1.2 s

    Real visitors wait 1.2 s for the largest content to appear (75th percentile). Good is under 2.5 s.

  • Real-user FCP: 1.1 s

    1.1 s

    Real visitors see the first content after 1.1 s (75th percentile). Good is under 1.8 s.

  • Real-user TTFB: 723 ms

    723 ms

    Real visitors wait 723 ms for your server to start answering (75th percentile). Good is under 800 ms.

  • Tap response (INP) got 30% faster for real visitors

    -30%

    Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' tap response (inp) went from 195 ms to 130 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

  • Largest content (LCP) got 48% faster for real visitors

    -48%

    Over the last 25 four-week periods to 2026-11-07, real Chrome visitors' largest content (lcp) went from 2.0 s to 1.0 s at the 75th percentile (Chrome UX Report (opens in a new tab) history).

  • Speed Index: 2.1 s

    2.1 s

    Visually, the page fills in at 2.1 s (Speed Index), inside the 3.4 s “good” threshold.

Images and page weight

2 to fix65
  • 1 image over 500 KB

    650ba542009f537737c51e52.svg+xml weighs 812 KiB. On a phone connection a single image that size takes seconds.

  • 1 image far larger than shown

    790 KiB

    1 image is downloaded at several times the size a phone draws it, for example 650ba542009f537737c51e52.svg+xml at 2,700 px wide, shown at 150 px. Resized copies would save about 790 KiB.

  • About 0.5 g of CO₂ per visit

    0.54 g

    By the Sustainable Web Design model, a visit to your homepage emits about 0.54 g of CO₂e: 64.3 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

3 checks passed
  • Page weight: 1.9 MB in 84 requests

    1.9 MB

    Your homepage downloads 1.9 MB in 84 requests on a phone: images 882 KiB (14), scripts 683 KiB (48) and HTML 197 KiB (2). That is a lean page.

  • Images use modern formats

    Every sizeable image is WebP, AVIF or SVG.

  • Images load when needed

    Images below the first screen wait until the visitor scrolls to them.

Accessibility

5 to fixGoogle 8891
  • 1 button without a name

    1 button has no accessible name, so screen readers announce just “button”.

  • 24 text elements with low contrast

    24 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.

  • Links look like plain text

    3 links inside paragraphs rely on colour alone to stand out.

  • All page content should be contained by landmarks (190 elements)

    All page content should be contained by landmarks: 190 elements on the page fail this check, rated moderate by axe-core.

  • 1 form field without a label

    1 form field has no label, so screen readers announce an empty box and autofill guesses.

  • Headings skip levels

    Headings skip levels (h1 → h3 and h2 → h4), which makes the page harder to scan with a screen reader.

2 checks passed
  • Every image has alt text

    All 69 images in the HTML carry an alt attribute.

  • 41 automated accessibility rules passed

    axe-core 4.13.0, the open-source engine behind most accessibility testing tools, ran 46 WCAG 2.2 A/AA and best-practice rules on the phone render: 41 passed and 5 failed. 1 more need a person to judge. Automated rules catch about a third of accessibility problems; the rest need manual testing.

SEO

3 to fixGoogle 10087
  • No structured data

    No structured data (JSON-LD), so Google can't show rich results such as your logo, ratings or FAQs.

  • 12 H1 headlines

    There are 12 <h1> headlines (“Build and DeployAI Agents”, “AI Agents Across Every Channel” and “White Label AI Voice Agents”). One clear main headline is easier for people and search engines.

  • No canonical URL

    No canonical URL, so duplicate versions of the homepage (with or without www, with tracking parameters) can split ranking signals.

  • 34 internal links, 24 external

    The homepage links to 34 pages on stammer.ai and 24 external pages.

5 checks passed
  • Meta description: 122 characters

    Your meta description is 122 characters: “Build white label AI chatbots and AI voice agents that can answer questions, generate leads, schedule appointments & mo…”.

  • Title: 51 characters

    Your title is a healthy 51 characters: “White Label AI Agents for Chat & Voice | Stammer AI”.

  • Open Graph tags complete

    Open Graph tags are complete, so shared links show a title, description and image.

  • robots.txt in place

    robots.txt is in place.

  • XML sitemap found

    Your XML sitemap is reachable at https://stammer.ai/sitemap.xml.

AI search readiness

1 to fix88
  • No Organization structured data

    There is no Organization (or LocalBusiness) JSON-LD, so search engines and AI assistants have no machine-readable facts about who runs the site: its name, logo, profiles and contact details.

3 checks passed
  • AI answer engines may read the site

    Your robots.txt lets the crawlers behind ChatGPT search, Claude and Perplexity read the site and cite it in answers.

  • Text is in the HTML

    Your server sends the page's text in the HTML (2,676 words), so crawlers that don't run JavaScript still read it.

  • llms.txt published

    The site publishes https://stammer.ai/llms.txt (6 KiB, 15 links), a plain-text guide to the site for AI tools.

Other pages

6 to fix43
  • 1 linked page is broken

    Your homepage links to https://stammer.ai/affiliate, which answers with an error. Visitors hit a dead end and search engines drop it.

  • 1 page without a title

    https://stammer.ai/enterprise has no <title>, so Google invents the link text in results.

  • 1 linked page hidden from search

    https://stammer.ai/enterprise is marked noindex but linked from your homepage. If it is meant to be found, remove the noindex.

  • 2 pages without a meta description

    https://stammer.ai/course and https://stammer.ai/enterprise have no meta description, so Google writes the search snippet from whatever text it finds.

  • 2 pages share a meta description

    https://stammer.ai/ai-agency and https://stammer.ai/lead-generation use the same meta description. A description written for each page earns more clicks.

  • 4 pages without an H1

    https://stammer.ai/pricing, https://stammer.ai/daily-support-call, https://stammer.ai/course and https://stammer.ai/enterprise have no <h1> headline, so visitors and search engines get no clear main topic.

  • 15 internal pages checked

    We fetched 15 pages linked from your homepage (of 26 found) and read each the way a search engine does.

2 checks passed
  • Canonical URLs point to themselves

    No page we checked hands its ranking to a different URL.

  • Titles are unique

    Every page we checked has its own title.

Best practices

1 to fixGoogle 10093
  • 1 small tap target

    1 of 5 tappable elements near the top of the page is smaller than 24 px, hard to hit with a thumb.

2 checks passed
  • No console errors

    No JavaScript errors were logged while the page loaded on a phone.

  • Mobile viewport set

    The page declares a mobile viewport.

Content and conversion

1 to fix90
  • No direct contact details

    No phone number or email link on the homepage, so ready-to-buy visitors have one fewer way to reach you.

  • No form on the homepage

    There is no form on the homepage, so every lead has to click through to another page first.

  • No risk reducer

    No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

  • About 2,192 words of copy

    The homepage carries about 2,192 words of visible text.

4 checks passed
  • Clear next step on the first screen

    On a phone, the first screen shows a clear next step: “Get Started 👉”.

  • 16 calls to action

    The homepage has 16 calls to action, for example “Pricing”, “Try for Free” and “Get Started 👉”.

  • Social proof on the page

    Social proof on the homepage: 23 testimonial or review blocks and 4 trust badges.

  • Analytics in place

    Analytics detected: Meta Pixel and Cloudflare Web Analytics.

Privacy and tracking

1 to fix
  • 1 tracker load before any consent

    1

    Before a visitor clicks anything, the page loads Meta Pixel (measured from a US location before any click). No consent tool was detected. Visitors from the EU, UK and several US states must be asked first.

  • 7 cookies set on arrival

    7

    Opening the homepage sets 7 cookies, 3 of them by other companies (measured from a US location before any click).

  • No consent tool detected

    No known cookie consent tool loads with the page. Some sites build their own banner, and some only show one to visitors from the EU.

  • 10 other companies contacted

    Loading the homepage contacts 10 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.

Security, domain, email and software versions

The security, domain and email checks, software and plugin versions, and any app with a known security problem are visible only to people at stammer.ai, because details like these could help someone attack a site. Every review keeps them private, whatever they found.

Upkeep, stack and company

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Upkeep, stack, hiring and company data from programmable.info

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